24
User manual
COFDM-QAM
Input loop through losses:
< 1.2 dB
Input level:
-60 to –20 dBm
Input frequency:
174-230 MHz (BIII) /
(8K, 64 QAM, FEC 2/3)
474-858 MHz (UHF)
Input VSWR (75 ohm):
> 12 dB (46 - 862 MHz)
or channel table CCIR
FFT:
2K, 8K
Mast amplifiers powering:
Selectable 0V-12V-24V
Constellation:
QPSK, 16 QAM, 64 QAM
(<60mA)
Guard interval:
1/4, 1/8, 1/16, 1/32
Input SAW filter:
7 - 8 MHz
(
*
)
Viterbi rate:
1/2, 2/3, 3/4, 5/6, 7/8
Frequency steps:
1 MHz
Transmission standard:
ETS300744
Locking margin:
± 500 KHz
Modulation format:
16QAM, 32QAM, 64QAM,
Block code:
RS(188, 204)
128QAM, 256QAM
Scrambling Interleaving:
ETS300429
Symbol rate:
7.2 Mbaud max.
Output spectrum:
Normal/Inverted
Roll-off factor:
15%
(selectable)
Output frequency:
46 - 862 MHz
Regulation margin:
15 dB min.
or channel table
VSWR output (75 ohm):
10 dB min. 14 dB typ.
Frequency steps:
250 KHz
Through losses:
< 1.5 dB (46-862 MHz)
Maximum output level:
80 dBµV ±5 dB
Spurious band level:
55 dBc min. 60 typ.
Power consumption:
5V: 0,7 A
15V: 0,32 A
1.- TECHNICAL SPECIFICATIONS
1.1.- COFDM-QAM ref. 5056
COFDM
Demodulator
RF
Output
General
QAM
Modulator
(
*
)
Selectionable by means of menu in frequency mode or internally in case of working in channel mode.
The technical specifications are defined with a maximum room temperature of 40º C.
Summary of Contents for 5056
Page 1: ...Manual de instrucciones User manual Copyright Televés S A COFDM QAM ...
Page 2: ......
Page 46: ...46 COFDM QAM ...
